Saw-filing machine.



I'. B. SWIGERT.

SAW FILING MACHINE. APPLICATION FILED FEB. a, 1913.

l1,O'7Y.3 `,788'. Patented sep1;.9,1913.

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Q N w s v N s S I R n l im *4 uw im MJzzj/Z Witnesses I" WIWI', w .I Inventor I III by w y COLUMBIA PLANOGRMIH cD..wAsHlNa'roN D c Attorneys Patented Sept. 9, 1913. A 2 SHEETS-Smau.

rnnnnrcx B. SWIGERT, oreatnsisune, ILLrNois.

SAW-FILING MACHINE.

Specification of Lettersratent.

j, liatented Slept. 9, 19113.

Application filed February 8, 1913. Serial No. 747,189.

T0 all 'whom t mag/concern: v

Be it known that I, Fnnnnicri B. Swissm, a citizen of the United States, residing at Galesburg, in the county of Knox and State of Illinois, have invented a new and useful Saw-Filing Machine, of which the following is a specification.

The device constituting the subject matter of this application is a machine adapted to be employed for liling saws.

One object of the present invention is to provide novel means for holding the saw against movement in the direction in which the file moves.

Another object of the invention is to provide novel means for vadvancing the saw transversely of the file.

The invention aims, further, vto provide novel mechanism for actuating the file.r

It is within the scope of the invention to improve generally and to increase the utility of, devices of that type to which the present invention appertains.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the v details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment ofthe invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

Inl the drawing z--Figure 1 shows the invention in rear elevation, parts being broken away; Fig. 2 is a transverse section upon the line 2-.2 of Fig. 3;` Fig. 3 is a vertical longitudinal section, the major portions of the structure appearing in elevation; Fig. 4 is an end elevation; and Fig. 5 is a perspecf tive .ofthe depth gage.

The invention includes three cooperating mechanisms, to wit, the means for supporting the saw and for holding the saw against transverse movement while the same is being acted upon by the file; a mechanism for imparting step by step movement to the saw, so that the successive teeth of the saw may be positioned beneath the file; and a mecha-` nism for reciprocating .theiile These several component parts of the structure will be described in order, and as a preliminary statement, the device includes a base 1 upon which the coacting parts are supported.

The saw supporting Wwcham'smr-Fixed to the base 1 adjacent one end of the base and locatedadjacent the longitudinal edges of the base are saw supporting blocks 2. Each block 2 is provided-with a horizontal .shoulder 3 and with an upstanding lip 4.

The back or smooth edge of the saw 5 rests s upon the horizontal shoulder 3 andi one side face of the saw 5 slides along the lip l4, the

Lsaw 5 extending crosswise of the base 1 as shown to the best advantagein Fig. 4.

The invention further lincludes an up'- standing, inclined guide 6 provided with laterally extended feet 7 which are secured `to the base 1. -The guide G constitutes no part of the saw holding mechanism, saving for the fact that one foot 7 of the guide may' be provided with an angular abutment S as shown most clearly in Fig. 3.` This abutment 8 coperates with a clamp plate 9 which is supported upon a pair of threaded studs 10, the studs being mounted in the abutment 8. Wing nuts 11 are threaded on the ends of the studs 10 and springs 12 are compressed between the wing nuts and the clamp 9. The adjacent faces of the abutment Sand of the clamp 9 are recessed and threaded to receive an adjusting screw 14.

The saw 5 is advanced longitudinallyand slides along the shoulders 3 in abutment with the lips 4, the saw being frictionally held for sliding movement between the abutment 8 and the spring actuating clamp 9. The adjusting screw 14 may be regulated to support saws of different widths.

The mechanism for advancing the saw Z0agtudaally-Extended longitudinally of the base 1 is a rock shaft 15 journaled in bearings 16, one of which is'secured to the base 1, the other of which is secured to the kbase and may constitute a part of a frame 17. At one end the shaft L15i's'l equipped with a crank arm 18 towhich a block 19 is pivoted as indicated at 2O.y Slidably mount ed in the block 19 is the stem 21 ofa saw actuating pawl 22, the stem 21 being held in theblocl 19 by means of a set screw 23.

- The dropping movement of the free end of ,rica

the pawlr 22may be limited by the stop 5S which is secured to the basel adjacent the guide 6, hereinbefore l mentioned .incidentally. rlhe pawl 22 lextends transversely of the base 1 and is equipped along its upper edge, at itsv free end, with .an overhanging finger 24 which is adapted to engage the teethl of the saw j At one end ofltherock shaft 15, the same isequipped with a crank arm 25. Collars 26 are secured to the arm 25 by means ofA gaged with the arm and serves to swing I the upper end ofthe arm inwardly, so that the roller 28 will lie in the path of a cam 30, formed upon the side face of a pulley 31, the pulley 81 being secured to a shaft 32 which is journaled in the frame 17 and extends transversely of the base 1. Although theshaft 32 maybe actuated in any desired manner, the pulley 31 may constitute means for imparting rotary` movement to the shaft from a driving belt, and under such circumstances it may be desirable to mount a loose pulley 33 upon the shaft 32.

lVhen the shaft 32 is rotated, the 'fixed pulley 31 will be rotated also, the cam 30 of which will engage with the roller 28, thereby imparting oscillatory movement to the shaft 15 through the medium of the arm i 25. When the shaft 15 is oscillated, the

arm 18 will swing transversely of the base 1, the pawl 22 pivoting upon the arm 18 at 19, and the lip 24 of the pawl engaging the teeth of the saw 5, to pull the saw transversely of the base 1, the lip 24 being inclined, so as to slide readily over the teeth of the saw when the pawl 22 is moved to the right in F ig. 2, thereby permitting the lip 24 to secure a hold upon another tooth of the saw. lhrough the operation of the mecha- .nism last above described, a step by step movement will be imparted to the saw 5, the saw moving transversely of the base 1.

The )le holding cmd yZe operating mecha! m'sm-.--AL carriage 34 lies against one side face of the inclined guide 6, the carriage being in the form of a plate having, a flange 35 which hooks over the upper edge of the guide, tothe end that the carriage may be supported for right line reciprocatory movement upon the guide. In the carriage 34 there is, as shown in F ig. 1, an upright slot 36, receiving aY headed bolt 87 adjustably, the bolt 87 carrying a wing nut 38 engaging the carriage 34 so that the bolt may be held infadjusted positions in the slot 36 for a purpose to be described hereinafter. The bolt 87 constitutes a. pivotal `mounting for a V'pit-man 39'which is'pivoted as shown at 40 to one end of an arm 41 havinga slot 42 adapted to receive a' headed bolt-43 entering one end of -thershaft 82.' Adjacent one end, the carriage 34 is equipped with a depending extension 44 and upon'the eXtension 44 and upon a spacing block 45 which is located adjacent the top of the carriage is mounted'a guide 46, heldin place by bolt and nut connections 47 and 48, the connections preferably being wing nut connections. A tile. holder 49, ordinarilyl taking the form of a Hat plate, is mounted to slideV between the guide 46 and the carriage 34, the Ele Vholder 49, intermediate its ends, being fulcrumed to swing upon the bolt 37 which constitutes, also, a connection wit-h the pitman 39. A depth gage 75 is applied to the guide 46, the gage 75 being provided with a longitudinal slot 76, receiving the bolt and the wing nutconnections 47. By this means, the gage 75 may be adjusted vertically. Adjacent zits upper end, the gage 75 is provided with wings 77'which lie along the vedges of the guide 46 and extend breneath the le holder 49. The depth gage 75 coperates with the file holder 49, to limit the downward swinging movement thereof, thereby causing the tile, hereinafter referred to, to strike at equal depth at each stroke. Adjacent one end, the ijle holder 49 is equipped with an outstanding shoulder 50 which lies beneath `and in the path of the lower edge ofthe pitman 39. Secured to the lfile vholder 49 and extending transversely thereof is a fixed ile support 51, coperating with a movable support 52, the same being provided with bolt and wing nut connections 53, adapted to move adjustably in slots 54 extended longitudinally of the file holder 49, adjacent the free end of the file holder. The lower bolt and wingl nut connection serves as a support for the upper end of a resilient clamp 55 held in place upon the member 52 by means of a bolt and wing nut connection 56. The butt of the tile 57 is mounted removably in the lower end of the holder 51, the tang of the tile being bound by means of the bolt and nut connection 56, between the clamp 55 Vand the lower end of the movable file support 52.

A reciprocaltory movement is imparted to th'efile holder 49 and to the file 57 as follows V-hen the shaft 32 is rotated, the pitman 39 will be actuated, the pitman 39 moving the carriage 34 to and fro'and moving the file holder 49 and the tile 57 to and fro, owing to the fact `that the file holder 49 and the carriage 84 have a common pivotal connection with the pitman 39 at 38-87 An orbital movement isimparted to the file 57 by reason of the fact that when the pitman 39 is advanced, Vthe lower edge of `the pitman comes into contact with the shoulder 50 of the file holder 49, thus tilting the tile holder 49 with the bolt 37, as a fulcrum. Thus, at the end of the forward stroke of the file 57, the file will be lifted oll the saw, whenthe lower edge of the pit-man 39 engages the shoulder 50. Y

Operation-Although the operation of the structure has been dealt with hereinbefore in connection with the several constituent-mechanisms, it will be understood that the shaft 32, through the medium of the arm 25 rocks the shaft 15, the arm 18 actuating the .pawl 22 which, engaging the teeth of the saw, moves the saw longitudinally, so that the successive teeth come in vertical alinement with the -ile 57. The shaft 32 through the mediumof the crank arm 41 actuates the pitman 39, the pitman 39 sliding the carriage 34 and the iile-holder 49 to and fro, so that, upon the forward, stroke, fthefile 57 will engage and sharpen the teeth yof the saw. "When thecutting stroke vof Ythe file 57 has been completed, the lower edge of the pitman 39 will engage the shoulder 50 and tilt the file holder 49 so that the file does not engage the teeth of the saw 5, upon the backstroke of the file. `Adjustmcnts.-By manipulating the ad justing screw 14, the saws of diderent widths may be accommodated. In order to adapt the machine for use in connection with saws having teeth of different widths, the roller 2S may be shifted up and down the arm 25 by moving the collars 26 and thus the throw of the arm 25 and the arc in Y which the rock shaft 15 moves may be regulated, so that the arm 1S and the pawl 22 will make a long or a short stroke, depending upon the length of the slant faces of the teeth of the saw 5. The position of the lip 24 of the pawl 22 with respect to the file 57 may be adjusted by loosening the set screw 23 in the block 19 and by shifting the stem 21 of the pawl, it being' possible, by this adjustment, to bring `the edge of the lip 24 in abutment with the upright edge of one tooth of the saw 5 after the position of the roller 28 with respect to the cam 3() has been adjusted. The slots 54 in the file holder 49 permit the movable file support 52 to be moved so that files of different lengths may be accommodated. The throw of the pitman 39, and consequently the length of the stroke accomplished by the file 57 may be regulated by moving the crank arm 41 transversely of the bolt 43, the slot 42 in the crank arm permitting this adjustment. The file 57 may be madevto stand level during its cutting stroke, by

adjusting the bolt and wing nut connectionv 371-38 in the slot 36 of the carriage 34.

Having thus described the invention', what is claimed is 2- n 1. In a saw filing machine, a guide;'a carriage mounted to slide upon the guide; a file holder fulcrumed upon the carriage; a pitman pivoted to the carriage; means for actuatingv the pitman; and interengaging elements upon the holder and upon the pitman for tilting the holder.

2. In a saw filing machine', a guide; a carriage mounted to slide up on the guide; a file holder fulcrumed intermediate its ends uponV the carriage and provided adjacent one end with a shoulder; a pitman pivoted to the carriage and adapted to engage the shoulder; means for actuating the pitman; and means forV moving the saw transversely of f theline of movement of the carriage.

3.- In a saw filing machine, a guide; a carriage mounted to slide upon the guide; al file holder fulcrumed on the carriage; a pitman pivoted to the carriage; means for actuating the pitman; interengaging elements upon the holder and upon the pitman for tilting the holder; and a pair o-f file supports mounted upon the file holder, one of which supports is adjustable longitudinally of the file holder.

4. In a saw filing machine, a guide; a carriage mounted to slide on the guide; a file holder; means for pivotally connecting the file holderwith the carriage adjustably for movement transversely of the carriage to permit a leveling of the file'holder; means for actuating the carriage; and interengaging elements upon said means and upon the file holder for imparting a swinging movement to the file holder.

5. In a saw filing machine, a guide; a carriage mounted to slide on the guide; a pitman; a file holder; a common connection between the pitman, carriage and the holder, permitting a pivotal movement of the pitman and the holder with respect t0 thecarriage, the connection being adjustable transversely of the carriage to effect a leveling of the file holder; and interengaging elements upon the pitman and upon the le holder for imparting swinging movement to the file holder.

6. In a saw filing machine, a guide; a carriage mounted to slide upon the guide; a file holder pivoted to the carriage; a pitman pivotally connected with the carriage to ad- Vance and to retract the carriage; interengaging elements on the pitman and on the file holder for lifting the file holder; a crank shaft with which the pitman is connected; a rock shaft journaled adjacent the guide and provided with radial arms; mechanism operatively connected with the crank shaft and engaging one of said arms; and a saw engaging pawl operatively connected with the other of said arms and movable transversely of t-he line of movement of the carriage.

7.`In a device of the class described, a supporting structure; a shaft journaled thereon and providedwith a cam; a rock shaft journaled on the supporting structure upon one side of the cam and provided with an arm coperating directly with the cam; a pawl pivotally connected with the rock shaft eccentrically of the rock shaft; `a file holder; and means located upon the other side of the cam for operatively connecting the file holder with the first specified shaft.

8. In a saw filing machine, a guide; a car riage mounted to slide upon the guide; a ile holder fulcrumed on the carriage; means for sliding the carriage; means for tilting 9. In a saw lingmaehine, aV guide; a earriage'lnounted to slide upon theguide; a file 'holder fulcrumed on the carriage; means for slidingthe carriage;f1`njeans for tilting the le holder; means for adjusting the le holderupon the Carriage to effect a leveling ofthe le holder; and a depth gage adapted to engage the le holder and mounted 0n the carriage for movement transversely of theline 'of movement of the carriage.v

l0. In a saw filing machine, v'af/guide; a carriage mounted to slide upon the guide; a file holder ulcrumed on the carriage; a. second guide secured to the carriage and constituting means for directing the tilting `movement 'of the file holder upon the carriage-,f a depth ygage mounted upon the last specified guide and adapted to engage the le holder; vmeans for tilting the file holder; and means for sliding the carriage. 'In testimony that I claim the foregoing as my own, I have hereto afliXed my signature in the presence of two Witnesses.

FR'EDRICK B. SWIG-ERT. `VVitfnezsses:

C. W. WALKER, SELMA 'FAGERLUNR babies 'of this afent may Abe obtained fr me ents each, ny 'mressingthe Cnlmissioner of Patents. 

